Study the collections at Bunker Museum, Museum of the World Ocean, or B-413 Submarine Museum. Sights like Ruins of Koenigsberg castle, Amber Museum, and Honey Bridge are must-sees while exploring the area. You can watch performances at Kaliningrad Regional Musical Theatre, Kaliningrad Regional Philharmonic Hall, and Kaliningrad Regional Youth Theater for Young Spectators if you're interested in local theater.